Trolley-pole.



PATENTEDDBC. 22, 1903.

No. 747,607. I

J. R. HOLLIS.

TROLLEY POLE.

APPLICATION FILED NOV. 7, 1902.

N0 MODEL.

- of my improved trolley-pole.

Patented December 22, 1903.

PATENT OFFICE.

J ONAH R. HOLLIS, OF BROGKTON, MASSACHUSETTS.

TROLLEY-POLE.

SEEGIFICATION forming part of Letters Patent N 0. 747,607, dated December 22, 03.

Application filed November 7, 1902. Serial No. 130A26. (No model.) i

To all whom, it may concern.-

Beit known that I, JONAH R. HOLLIS, a citizen of the United States, residing at Brockton, Plymouth county, Massachusetts, have invented certain new and useful Improvements in TrolleyPoles, of which the following is a specificatiom My invention relates to improvements in trolley-poles, and has for its object to provide a very simple, economical, and efficient trolley-pole, which will accommodate itself to curves or other irregularities or deviations of the wire from a straight line, so that the wheel will always travel in contact with the wire not only when the car is traveling along a straight line, but as well when it is on a curve.

To the end stated my invention consistsin a trolley-pole constructed as hereinafter described, and set forth in the accompanying clauses of claim, reference being had to the accom panying drawings in explanation thereof, and in which Figure 1 is a view partly in elevation and partly in section. Fig. 2' is a rear elevation Fig. 3 is a detail of the body of the trolley-pole; Fig. 4, a detail of the pivoted wheel-carrying section.

In the said drawing, the reference-numeral 1 indicates the body of the trolley-pole, which atits upper extremity is provided with an offstanding angularly-disposed coupling part 2, having a vertical bore or perforation 3 therethrough and formed with asnbstantially crescent-shaped guide-seat 4.

The numeral 5 illustrates the trolley-wheel carrying the pivotal section forming a prolongation of the body 1, and in which the trolley-wheel 6 is suitably mounted. This section 5 is provided with an angular base 5, which rests upon the seat 4, formed on the coupling part 2, and from this angular base 5 a vertical stud 7 projects downwardly and fits into the bore or perforation 3 of the coupling part of the pole and is removably secured therein by any suitable device, such as a cotter pin or key 8. The edge of the base part of this removable section is rounded to conform to the contour of the segmental guide-seat 4. It rests upon said guide-seat in practice and moves thereon in operation when rounding a curve. The points 4 of the crescentshaped guide-seat serve as stops to limit the lateral movement of the pivoted trolley-wheel-carrying section and prevent said section assuming an inoperative position.

My improved trolley-pole as shown and described is of extremely-simple construction and economical of manufacture and at the same time is delicate in its response to any curve or irregularity in the wire, permitting the trolley-wheel to follow easily any such curves or irregularities and yet limiting the lateral movement thereof, so that there shall be no abnormal lateral swinging motion of the pivoted trolley-wheel-carrying section, such as would throw the trolley-wheel out of operative position or require constant watch or attention by the operator.

The normal position of the trolley-pole, as is well known, is at a backward inclination or angle from the point of attachment to the car, and according to my invention the parts are so constructed that the pivotal trolley-wheelcarrying section constitutes a prolongation of the body of the pole in the line of inclination thereof. In such a trolley-pole arrangement in order that the pivoted wheel-carrying section may swing horizontally upon a vertical axis the hereinbefore-described con-.

struction and arrangement of coupling elementandcorresponding relativeconstruction and arrangement of the base of the trolleywheel-carrying section and the stud projecting therefrom are provided. The arrangement described afiords a very simple and satisfactory construction of trolley-pole in which the trolley-wheel-carrying section is adaptedto swing horizontally upon a vertical axis, facilitating its movement, so that it will readily follow any curve or irregularity in the trolley-wire.

I provide a spring 9, suitably and fixedly secured to the coupling part, the arms of 1. The herein-described trolley'pole, consisting of a body portion provided at its extremity with an angularly-disposed ofistanding coupling part having a vertical bore or perforation, and a. substantially segmentalshaped guide-seat,and a pivoted trolley-Wheelcarrying section having a trolley-wheel suitably mounted therein and provided with a vertical stud or journal arranged in the bore or perforation of the coupling part, substantially as described.

2. The herein-described trolley-pole, consisting of a body portion provided at its extremity with an angularly-disposed ofifstanding coupling part having a vertical bore or perforation and a substantially segmentalshaped guide-seat having stops, and a pivoted trolley-Wheel-carrying section constituting a prolongation of the body portion of the trolley-pole and having a vertical stud or journal arranged in the vertical bore or perforation of the coupling part, and having a coupling part, and a spring rigidly secured to the coupling part and having arms that engage the trolley-Wheel-carrying section.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit nesses.

J ONAH R. HOLLIS. Witnesses:

ALBERT G. BROWN, JOHN A. S LLI AN. 

